<template>
  <div>

    <h3>用户列表组件</h3>
<!--    面包屑导航区-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

<!--    卡片视图-->
    <el-card class="box-card">
<!--      搜索与添加区域-->
<!--        gutter增加同行组件间的间距-->
      <el-row :gutter="20">
          <el-col :span="8">
            <el-input placeholder="请输入内容"
                      v-model="queryInfo.query"
                      clearable
                      @clear = getUserList>
              <el-button slot="append" icon="el-icon-search"
                         @click="getUserList"></el-button>
            </el-input>
          </el-col>
          <el-col :span="4">
            <el-button type="primary"
                       @click="addDialogVisible=true">添加用户</el-button>
          </el-col>
        </el-row>

<!--      表格-->
      <el-table :data="userlist" style="width: 100%"border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column prop="username" label="名称" width="180"></el-table-column>
        <el-table-column prop="role_name" label="角色" width="180"></el-table-column>
        <el-table-column prop="email" label="邮箱" width="180"></el-table-column>
        <el-table-column prop="mobile" label="电话" width="180"></el-table-column>
        <el-table-column label="状态" width="180">
          <template slot-scope="scope">
            <!--渲染一个状态开关,作用域插槽会覆盖作用域-->
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180">
          <template slot-scope="scope">
<!--            修改按钮-->
            <el-button type="primary" icon="el-icon-edit"
                       size="mini"@click="showEditDialog(scope.row.id)"></el-button>
<!--            删除按钮-->
            <el-button type="danger" icon="el-icon-delete"
                       size="mini"@click="removeUserById(scope.row.id)"></el-button>
<!--            分配角色按钮-->
            <el-tooltip effect="dark" content="分配角色"
                        placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini"
              @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

<!--      分页显示-->
      <el-pagination
              @size-change="handleSizeChange"
              @current-change="handleCurrentChange"
              :current-page="queryInfo.pagenum"
              :page-sizes="[1, 2, 5, 10]"
              :page-size="queryInfo.pagesize"
              layout="total, sizes, prev, pager, next, jumper"
              :total="total">
      </el-pagination>

    </el-card>

<!--    添加用户的对话框-->
    <el-dialog
            title="提示"
            :visible.sync="addDialogVisible"
            width="50%"
            @close="addDialogClosed">
<!--      内容主题-->
      <el-form :model="addForm" :rules="addFormRules"
               ref="addFormRef" label-width="70px" >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
<!--      底部区域-->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
<!--    修改用户的对话框-->
    <el-dialog title="修改用户"
            :visible.sync="editDialogVisible"
            width="30%">
      <el-form ref="editFormRef" :model="editForm" label-width="70px"
               :rules="editFormRules">
<!--        <el-form-item label="用户名">-->
<!--          <el-input v-model="editForm.username"disabled></el-input>-->
<!--        </el-form-item>-->
        <el-form-item label="用户名">
          <el-input v-model="editForm.username"disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱"prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号"prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

<!--    分配角色的对话框-->
    <el-dialog
            title="分配角色"
            :visible.sync="setRoleDialogVisible"
            width="30%"
            @close="setRoleDialogClosed"
            >
      <div>
        <p>当前的用户:{{userInfo.username}}</p>
        <p>当前的角色:{{userInfo.role_name}}</p>
        <p>
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
                    v-for="item in rolesList"
                    :key="item.id"
                    :label="item.roleName"
                    :value="item.id">
            </el-option>
          </el-select>
        </p>

      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>



  </div>
</template>

<script>
  export default {
    name: "users",
    data(){
      //验证邮箱的规则
      var checkEmail = (rule,value,cb) =>{
        //验证邮箱的正则表达
        const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
        if(regEmail.test(value)){
          //合法的邮箱
          return cb()
        }
        cb(new Error('请输入合法的邮箱'))
      }
      //验证手机号的规则
      var checkMobile = (rule,value,cb) => {
        //验证手机号的正则表达式
        const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

        if(regMobile.test(value)){
          return cb()
        }
        cb(new Error('请输入合法手机号'))
      }

      return{
        //获取用户列表的参数
        queryInfo:{
          query:'',
          // 当前页数
          pagenum:1,
          // 当前每页显示多少条数据
          pagesize:2
        },
        userlist:[],
        total:0,
        //控制添加用户对话框的显示和隐藏
        addDialogVisible:false,
        //修改用户对话框
        editDialogVisible:false,
        //添加用户的表单数据
        addForm:{
          username:'',
          password:'',
          email:'',
          mobile:''
        },
        //添加表单的验证规则对象
        addFormRules:{
          username:[
            {required:true,message:'请输入用户名',trigger:'blur'},
            {min:3,max:10,message:'用户名长度在3到10个之间',trigger:'blur'}
          ],
          password:[
            {required:true,message:'请输入密码',trigger:'blur'},
            {min:6,max:12,message:'密码长度在6到12个之间',trigger:'blur'}
          ],
          email:[
            {required:true,message:'请输入邮箱',trigger:'blur'},
            {validator:checkEmail,trigger:'blur'}
          ],
          mobile:[
            {required:true,message:'请输入手机号码',trigger:'blur'},
            {min:11,max:11,message:'手机长度为11位',trigger:'blur'},
            {validator:checkMobile,trigger:'blur'}

          ]
        },
        addFormRef:{},
        //对话框中所需添加的用户数据
        editForm:{},
        editFormRules:{
          email:[
            {required:true,message:'请输入邮箱',trigger:'blur'},
            {validator:checkEmail,trigger:'blur'}
          ],
          mobile:[
            {required:true,message:'请输入手机号码',trigger:'blur'},
            {validator:checkMobile,trigger:'blur'}
          ]
        },
        editFormRef:{},
        //控制分配角色的闲事与隐藏
        setRoleDialogVisible:false,
        //需要被分配角色的用户信息
        userInfo:{},
        //所有角色的数据列表
        rolesList:[],
        //已选中的角色ID值
        selectedRoleId:''
      }
    },
    created(){
      this.getUserList()
    },
    methods:{
      async getUserList(){
        const {data:res} = await this.$http.get('users',
            {params:this.queryInfo})
        if(res.meta.status !== 200)
          return this.$message.error('获取用户列表失败')
        this.userlist= res.data.users
        this.total= res.data.total
        // console.log(res)
      },
      //监听页面容量改变
      handleSizeChange(newsize){
        // console.log(newsize)
        this.queryInfo.pagesize = newsize
        this.getUserList()
      },
      //监听页码值改变的事件
      handleCurrentChange(newpage){
        // console.log(newpage)
        this.queryInfo.pagenum = newpage
        this.getUserList()
      },
      //监听switch开关状态的改变
      async userStateChanged(userinfo){
        // console.log(userinfo)
        const {data:res} = await this.$http.put
        (`users/${userinfo.id}/state/${userinfo.mg_state}`)
        if(res.meta.status !== 200){
          userinfo.mg_state = !userinfo.mg_state
          return this.$message.error('更新用户状态失败！')
        }
        this.$message.success('更新用户状态成功！')
      },
      //监听对话框关闭事件
      addDialogClosed(){
        this.$refs.addFormRef.resetFields()
      },
      //点击按钮，添加新用户
      addUser(){
        //表单预校验
        this.$refs.addFormRef.validate(async valid => {
          // console.log(valid)
          if(!valid)return
          //可以发起网络请求
          const {data:res} = await this.$http.post('users',this.addForm)
          if(res.meta.status !== 201){
            return this.$message.error('添加失败')
          }
          this.$message.success('添加成功')
          //隐藏添加的对话框
          this.addDialogVisible = false
          //重新获取列表
          this.getUserList()
        })
      },
      //展示编辑用户对话框
      async showEditDialog(id){
        // console.log(id)
        const {data:res} = await this.$http.get('users/'+id)
        if(res.meta.status !== 200){
          return this.$message.error('获取失败')
        }
        // this.$message.success('获取成功')
        this.editForm = res.data
        this.editDialogVisible = true
      },
      //修改用户信息并提交
      editUserInfo(){
        this.$refs.editFormRef.validate(async valid => {
          // console.log(valid)
          if(!valid)return
          //发起用户请求
          const { data:res } =
              await this.$http.put('users/'+this.editForm.id,
              {email:this.editForm.email,mobile:this.editForm.mobile})
          if(res.meta.status !== 200){
            return this.$message.error('更新失败')
          }
          //关闭对话框
          this.editDialogVisible = false
          //刷新数据列表
          this.getUserList()
          //提示修改成功
          this.$message.success('更新成功')
        })
      },
      async removeUserById(id){
        //询问用户是否删除数据
        const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        /*如果确认删除，返回值为字符串confirm
        * 如果用户取消了删除，返回值为字符串cancel
        * console.log(confirmResult)*/
        if(confirmResult !== 'confirm'){
          return this.$message.info('已经取消删除')
        }
        const {data:res} = await this.$http.delete('users/'+id)
        if(res.meta.status !== 200){
          return this.$message.error('删除用户失败')
        }
        this.$message.success('删除用户成功')
        this.getUserList()
        // console.log(confirmResult)
      },
      //展示分配角色的对话框
      async setRole(userInfo){
        this.userInfo = userInfo
        //展示对话框之前，获取所有的角色列表
        const {data:res} = await this.$http.get('roles')
        if(res.meta.status !== 200)
          return this.$message.error('失败')
        this.rolesList = res.data
        this.setRoleDialogVisible = true
      },
      //点击按钮，分配角色
      async saveRoleInfo(){
        if(!this.selectedRoleId){
          return this.$message.error('请选择分配的角色')
        }
        const {data:res} = await this.$http.put(
            `users/${this.userInfo.id}/role`,
            {rid:this.selectedRoleId})
        if(res.meta.status !== 200 ){
          return this.$message.error('更新失败')
        }
        this.$message.success('更新成功')
        this.getUserList()
        this.setRoleDialogVisible = false
      },
      //监听分配角色对话框关闭
      setRoleDialogClosed(){
        this.selectedRoleId = ''
        this.userInfo = []
      }
    }
  }
</script>

<style lang="less" scoped>

</style>